Over one lakh people have applied for a one-way trip to Mars, as a part of the ambitious $6 bn dollar project that aims to colonise the Red planet starting in 2022. Here are 10 things you should know before you decide to travel to Mars.
A spirometer is an apparatus for measuring the volume of air inspired and expired by the lungs. A spirometer measures ventilation, the movement of air into and out of the lungs. The spirogram will identify two different types of abnormal ventilation patterns, obstructive and restrictive.
Spirograph is a geometric drawing toy that produces mathematical roulette curves of the variety technically known as hypotrochoids and epitrochoids . It was developed by British engineer Denys Fisher and first sold in 1965.